Greg KH writes ("Re: Regression due to "mm/swap.c: flush lru pvecs on compound page arrival""):

On Wed, Dec 14, 2016 at 03:14:54PM +0000, Ian Jackson wrote:

quoted

Start reading at Dec 14 07:59:33.478093.  At Dec 14 08:01:38.294433 a
log capture process started sending various debug keys to the console.

And is this also an issue in Linus's tree?

Sorry, no, I was unclear: this is a problem in 3.18.y.

Ian.